EP 0063306 B1 19850220 - ELECTRONIC METER OPERATING WITH CAPACITOR CHARGE EXCHANGE
Title (en)
ELECTRONIC METER OPERATING WITH CAPACITOR CHARGE EXCHANGE
Publication
Application
Priority
DE 3115522 A 19810416
Abstract (en)
[origin: EP0063306A1] 1. An electronic electricity meter which operates in accordance with the capacitor charge exchange method for detecting the energy consumption from at least one phase of an electric network, wherein the phase is assigned a multiplier element (4, 5, 6) supplied at its input with signals proportional to current and voltage, and the power-proportional output signals of all the multipliers are added to form a sum signal (S) fed to a quantizer (8) which consists of an integrator (13) and a following limit value element (14), which imposes an upper and a lower limit value, in order to form a pulse train (u14) with a power-proportional frequency, where, whenever a limit value is reached, the sum signal is reversed in polarity so that the output signal (u13) of the integrator represents a signal which is located between the two limit values and is fundamentally triangular, and where, via a frequency divider (17), the pulse train feeds a metering unit (19) for the energy consumption, characterised in that a pulse multiplier circuit (B) is provided which possesses a voltage comparator (22) which serves to compare the output signal (u13) of the integrator (13) with a plurality of threshold value voltages (un ) which are located between the limit values (G1, G2) and are equidistant (delta u) from one another in respect of the voltage level, and where the voltage comparator (22) supplies an output pulse (1, 2, ..., 32; up ) whenever the output signal (u13) of the integrator (13) reaches one of the threshold value voltages (u0, u1, u15).
IPC 1-7
IPC 8 full level
G01R 22/00 (2006.01); G01R 21/00 (2006.01); G01R 21/06 (2006.01)
CPC (source: EP)
G01R 21/00 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0063306 A1 19821027; EP 0063306 B1 19850220; AT E11965 T1 19850315; DE 3115522 A1 19821104; DE 3262379 D1 19850328; DK 168382 A 19821017; ES 511454 A0 19830216; ES 8304316 A1 19830216; FI 75060 B 19871231; FI 75060 C 19880411; FI 820644 L 19821017; JP S57182176 A 19821109; NO 157716 B 19880125; NO 157716 C 19880504; NO 821218 L 19821018; PT 74761 A 19820501; PT 74761 B 19831028
DOCDB simple family (application)
EP 82102915 A 19820405; AT 82102915 T 19820405; DE 3115522 A 19810416; DE 3262379 T 19820405; DK 168382 A 19820415; ES 511454 A 19820415; FI 820644 A 19820225; JP 6378582 A 19820416; NO 821218 A 19820414; PT 7476182 A 19820415